XML 52 R35.htm IDEA: XBRL DOCUMENT v2.4.0.8
Summary of Securities with Gross Unrealized Losses (Detail) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Schedule of Available-for-sale Securities [Line Items]    
Less than 12 months, Fair Value $ 454,562 $ 347,857
Less than 12 months, Gross Unrealized Losses (4,522) (7,318)
12 months or longer, Fair Value 142,146 [1] 10,443 [1]
12 months or longer, Gross Unrealized Losses (2,665) [1] (260) [1]
Total, Fair Value 596,708 358,300
Total, Gross Unrealized Losses (7,187) (7,578)
U.S. Treasury and Agency Obligations
    
Schedule of Available-for-sale Securities [Line Items]    
Total, Gross Unrealized Losses (122)  
Obligations of States and Political Subdivisions
    
Schedule of Available-for-sale Securities [Line Items]    
Total, Gross Unrealized Losses (1,174)  
Mortgage Backed Securities
    
Schedule of Available-for-sale Securities [Line Items]    
Total, Gross Unrealized Losses (1,518)  
Asset-backed Securities
    
Schedule of Available-for-sale Securities [Line Items]    
Total, Gross Unrealized Losses (419)  
Commercial Mortgage-Backed Securities
    
Schedule of Available-for-sale Securities [Line Items]    
Total, Gross Unrealized Losses (673)  
Corporate bonds and loans
    
Schedule of Available-for-sale Securities [Line Items]    
Total, Gross Unrealized Losses (579)  
Common Shares
    
Schedule of Available-for-sale Securities [Line Items]    
Less than 12 months, Fair Value 21,034 18,622
Less than 12 months, Gross Unrealized Losses (1,714) (627)
12 months or longer, Fair Value 1,710 [1] 140 [1]
12 months or longer, Gross Unrealized Losses (52) [1] (9) [1]
Total, Fair Value 22,744 18,762
Total, Gross Unrealized Losses (1,766) (636)
Other Invested Assets
    
Schedule of Available-for-sale Securities [Line Items]    
Less than 12 months, Fair Value 17,690  
Less than 12 months, Gross Unrealized Losses (719)  
Total, Fair Value 17,690  
Total, Gross Unrealized Losses (719)  
Fixed Maturities
    
Schedule of Available-for-sale Securities [Line Items]    
Less than 12 months, Fair Value 415,838 329,235
Less than 12 months, Gross Unrealized Losses (2,089) (6,691)
12 months or longer, Fair Value 140,436 [1] 10,303 [1]
12 months or longer, Gross Unrealized Losses (2,613) [1] (251) [1]
Total, Fair Value 556,274 339,538
Total, Gross Unrealized Losses (4,702) (6,942)
Fixed Maturities | U.S. Treasury and Agency Obligations
    
Schedule of Available-for-sale Securities [Line Items]    
Less than 12 months, Fair Value 19,473 9,335
Less than 12 months, Gross Unrealized Losses (13) (166)
12 months or longer, Fair Value 3,305 [1]  
12 months or longer, Gross Unrealized Losses (109) [1]  
Total, Fair Value 22,778 9,335
Total, Gross Unrealized Losses (122) (166)
Fixed Maturities | Obligations of States and Political Subdivisions
    
Schedule of Available-for-sale Securities [Line Items]    
Less than 12 months, Fair Value 41,333 61,401
Less than 12 months, Gross Unrealized Losses (454) (2,000)
12 months or longer, Fair Value 32,879 [1] 9,922 [1]
12 months or longer, Gross Unrealized Losses (720) [1] (241) [1]
Total, Fair Value 74,212 71,323
Total, Gross Unrealized Losses (1,174) (2,241)
Fixed Maturities | Mortgage Backed Securities
    
Schedule of Available-for-sale Securities [Line Items]    
Less than 12 months, Fair Value 38,619 110,304
Less than 12 months, Gross Unrealized Losses (211) (2,859)
12 months or longer, Fair Value 70,667 [1] 2 [1]
12 months or longer, Gross Unrealized Losses (1,307) [1]  
Total, Fair Value 109,286 110,306
Total, Gross Unrealized Losses (1,518) (2,859)
Fixed Maturities | Asset-backed Securities
    
Schedule of Available-for-sale Securities [Line Items]    
Less than 12 months, Fair Value 93,919 42,247
Less than 12 months, Gross Unrealized Losses (384) (228)
12 months or longer, Fair Value 3,640 [1] 3 [1]
12 months or longer, Gross Unrealized Losses (35) [1]  
Total, Fair Value 97,559 42,250
Total, Gross Unrealized Losses (419) (228)
Fixed Maturities | Commercial Mortgage-Backed Securities
    
Schedule of Available-for-sale Securities [Line Items]    
Less than 12 months, Fair Value 64,435 45,642
Less than 12 months, Gross Unrealized Losses (291) (856)
12 months or longer, Fair Value 26,736 [1]  
12 months or longer, Gross Unrealized Losses (382) [1]  
Total, Fair Value 91,171 45,642
Total, Gross Unrealized Losses (673) (856)
Fixed Maturities | Corporate bonds and loans
    
Schedule of Available-for-sale Securities [Line Items]    
Less than 12 months, Fair Value 108,325 60,306
Less than 12 months, Gross Unrealized Losses (519) (582)
12 months or longer, Fair Value 3,209 [1] 376 [1]
12 months or longer, Gross Unrealized Losses (60) [1] (10) [1]
Total, Fair Value 111,534 60,682
Total, Gross Unrealized Losses (579) (592)
Fixed Maturities | Foreign Corporate Bonds
    
Schedule of Available-for-sale Securities [Line Items]    
Less than 12 months, Fair Value 49,734  
Less than 12 months, Gross Unrealized Losses (217)  
Total, Fair Value 49,734  
Total, Gross Unrealized Losses $ (217)  
[1] Fixed maturities in a gross unrealized loss position for twelve months or longer are primarily comprised of non-credit losses on investment grade securities where management does not intend to sell, and it is more likely than not that the Company will not be forced to sell the security before recovery. The Company has analyzed these securities and has determined that they are not other than temporarily impaired.